This is a loop of children laughing I created by editing a sound effect I found on YouTube, uploaded by the user OnlineSoundEffects, who was giving it away for free download. I chopped up the file, spaced out the laughter a bit, and added reverb and delay to make it fit with the horror game style. This track is currently being used in my Amnesia custom story "Emily's Lullaby". It makes for a great atmospheric sound effect. Free for anyone to use for any purpose.